QUESTION!!!!

My partner is navy and is deploying in June for 8 months, my period was supposed to come January first and here we are at the 14th and it’s still not here. I’ve been feeling cramps, sick, finding it hard to eat etc. In November I came off my birth control after being on it for 13 years and in December I got my “period” as usual but January first I missed it. Can anyone give me advice!!! We have been trying to conceive and I’m so scared to test and be disappointed!!